Ubuntu 20.04 on Nvidia DPU sometimes shows eMMC error

[James Tau]

In some cases, we see that the Ubuntu 20.04 kernel (5.4.0-1023-bluefield) complains about the eMMC:

Line 107: [Thu Nov 3 19:45:36 2022] dw_mmc PRP0001:00: IDMAC supports 64-bit address mode.
Line 108: [Thu Nov 3 19:45:36 2022] dw_mmc PRP0001:00: Using internal DMA controller.
Line 109: [Thu Nov 3 19:45:36 2022] dw_mmc PRP0001:00: Version ID is 270a
Line 110: [Thu Nov 3 19:45:36 2022] dw_mmc PRP0001:00: DW MMC controller at irq 13,32 bit host data width,256 deep fifo
Line 110: [Thu Nov 3 19:45:36 2022] dw_mmc PRP0001:00: DW MMC controller at irq 13,32 bit host data width,256 deep fifo
Line 111: [Thu Nov 3 19:45:36 2022] mmc_host mmc0: Bus speed (slot 0) = 50000000Hz (slot req 400000Hz, actual 396825HZ div = 63)
Line 111: [Thu Nov 3 19:45:36 2022] mmc_host mmc0: Bus speed (slot 0) = 50000000Hz (slot req 400000Hz, actual 396825HZ div = 63)
Line 155: [Thu Nov 3 19:45:36 2022] mmc_host mmc0: Bus speed (slot 0) = 50000000Hz (slot req 50000000Hz, actual 50000000HZ div = 0)
Line 155: [Thu Nov 3 19:45:36 2022] mmc_host mmc0: Bus speed (slot 0) = 50000000Hz (slot req 50000000Hz, actual 50000000HZ div = 0)
Line 156: [Thu Nov 3 19:45:36 2022] mmc0: new high speed MMC card at address 0001
Line 156: [Thu Nov 3 19:45:36 2022] mmc0: new high speed MMC card at address 0001
Line 157: [Thu Nov 3 19:45:36 2022] mmcblk0: mmc0:0001 TA2964 58.3 GiB
Line 157: [Thu Nov 3 19:45:36 2022] mmcblk0: mmc0:0001 TA2964 58.3 GiB
Line 158: [Thu Nov 3 19:45:36 2022] mmcblk0boot0: mmc0:0001 TA2964 partition 1 4.00 MiB
Line 158: [Thu Nov 3 19:45:36 2022] mmcblk0boot0: mmc0:0001 TA2964 partition 1 4.00 MiB
Line 159: [Thu Nov 3 19:45:36 2022] mmcblk0boot1: mmc0:0001 TA2964 partition 2 4.00 MiB
Line 159: [Thu Nov 3 19:45:36 2022] mmcblk0boot1: mmc0:0001 TA2964 partition 2 4.00 MiB
Line 160: [Thu Nov 3 19:45:36 2022] mmcblk0: p1 p2
Line 376: [Thu Nov 3 19:46:56 2022] mmc_host mmc0: Timeout sending command (cmd 0×200000 arg 0×0 status 0×80200000)
Line 376: [Thu Nov 3 19:46:56 2022] mmc_host mmc0: Timeout sending command (cmd 0×200000 arg 0×0 status 0×80200000)
Line 377: [Thu Nov 3 19:46:57 2022] dw_mmc PRP0001:00: Card stuck in wrong state! card_busy_detect status: 0×0